package com.vt.common.security.component;

import cn.hutool.http.HttpStatus;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.vt.common.core.constant.CommonConstant;
import com.vt.common.core.util.R;
import lombok.AllArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.AuthenticationEntryPoint;
import org.springframework.stereotype.Component;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;

/**
 * 客户端异常处理
 * 1. 可以根据 AuthenticationException 不同细化异常处理
 */
@Slf4j
@Component
@AllArgsConstructor
public class ResourceAuthExceptionEntryPoint implements AuthenticationEntryPoint {
    private final ObjectMapper objectMapper;

    @Override
    public void commence(HttpServletRequest request, HttpServletResponse resp,
                         AuthenticationException authException) throws IOException {

        resp.setCharacterEncoding(CommonConstant.UTF8);
        resp.setContentType(CommonConstant.CONTENT_TYPE);

        R<String> r = new R<>();
        r.setStatus(401);
        r.setMsg(authException.getMessage());
        resp.setStatus(HttpStatus.HTTP_UNAUTHORIZED);

        PrintWriter printWriter = resp.getWriter();
        printWriter.append(objectMapper.writeValueAsString(r));
    }
}
